Wrench



F. c. HACHENEY July 8 1924.

WRENCH Filed July 16. 1923 Patented July 8, 1924.

UNITED STATES Y 1,500,311 PATENT OFFICE.

FRANK C. HACHENEY, OF JOHN DAY, OREGON.

WRENCH.

Application filed July 16, 1923. Serial No. ,651,924.

cially intended for use on grease cups although the wrench may be used for such other purposes as suggest themselves, and the main object of the inventionis to provide an adjustable cup wrench' having relatively movable heads which when once adjusted will remain in rigid and fixed relation until positively readjusted for different work. A particular feature of novelty resides in providing a tapered shank having a tapered locking key associated therewith whereby the movable head of the wrench may be quickly and accurately positioned and then held in secure and rigid adjusted position with respect to the tapered shank. Another novel feature resides in the provision of a movable head which is mounted. in pivotal relation on a bar that is adjustable with re spect to the tapered shank of the wrench, this movable head cooperating with a serrated head on shank of the wrench for gripping grease cups and the like whereby they may be removed or tightened in place.

The above and other objects of the invention will be apparent from the following description considered in connection with the accompanying drawings forming a part of this specification, and like numerals refer to like parts throughout the description.

In the drawings,

Fig. 1 is a side View of the wrench, a part being shown in section;

Fig. 2 is a top plan view of the wrench;

Fig. 8 is a top plan view'of the wrench showing it applied to a grease cup for removing it; and

Fig. 4 is a perspective view of the locking device and its operating member.

Referring to the drawings in detail, the reference character 10 designates the handle of the wrench and 11 is the tapered shank having the head 12 comprising the angularly disposed toothed or serrated members 13 and 14.

Slidably mounted on the shank 11 is a member 15 having a recess therein having the walls 16 and 17 at right angles to each other, the wall 17 having a screw threaded opening 18. Mounted within the recess is a tapered locking key 19 provided with a re cess 20. The key 19 has two surfaces or and F) at right angles to each other whereby the key fits the recess and the surface a is guided by the wall 16 of the recess in the slidable 1ne1nber15. An operating screw 21 passes through the opening 18 and the shoulder 22 bears on the surface I) of the key 19 whereby the turning force of the screw is transmitted to the key to force the latter.

into engagement with the tapered shank 11 to hold the slidable member 15 in rigid and firm position. Thus the slidable member 15 may be adjusted longitudinally of the shank 11, and it will be noted that by reason of the fact that the key 19 and the shank 11 taper in the same direction, the slidable member is held very securely from movement from its adjusted position and 'will withstand much more than ordinary wrench turning stresses. The operating screw 21 has a ball point 23 which is received within the recess of the key 19 and serves to withdraw the key from engagement with the shank 11 when the operating screw is turned for this purpose, thus obviating the necessity for a spring.

Pivotally connected to the slidable member 15 by means ofv a pivot pin 24: is a longitudinally extending bar 25, and pivotally connected to this bar 25 near the end thereof by means of a pivot pin 26 is a link member 27 which has preferably integral therewith the movable head 28 of the wrench. The head 28 is provided with angularly arranged surfaces 29 and 30 for engaging the grease cup or other article to which the wrench is to be applied.

In Fig. 3, the wrench is shown applied to a grease cup and is to be turned in the direction of the arrow for removing it for refilling or any other purpose. The manner of applying the wrench for tightening the grease cup or handling other work will be obvious and further explanation is unneces sary.

From the above description and from an inspection of the drawings, it is apparent that I have provided a wrench that is very simple in construction and very advantageous in use. The cooperation of the looking key with the tapered shank, the taper of the shank and the key being in the same direction and opposite to that of the pull on the slidable member, results in a firm and rigid fixed relation of the heads of the wrench whereby the adjustment of the wrench when once made for a given piece of work will not be disturbed and will not be altered by the force applied to the wrench.

While I have shown the best embodiment of the invention, it is to be understood that 1 the disclosure is only illustrative of the invention which may be modified without departing therefrom to the extent that certain changes may be madein the construction and arrangement of parts without departing from the invention as defined by the appended claims.

Having thus described by invention, what I claim and desire to secure by Letters Patjusted position, a bar pivotally connected to said slidable member, a link pivotally connected to said bar at the end thereof, and a head associated with said link and compris ing two angularly arranged members cooperating with the angularly disposed head portions of said shank.

3. A wrench comprising a tapered shank having a head comprising two angularly disposed portions, a member mounted on said shank and slidable thereon longitudinally thereof, means for holding said slidable member in adjust-ed position, a bar pivotally connected to said slidable member, and a head pivotally connected to said bar.

4. A wrench comprising a tapered shank having a head comprising two angularly disposed portions, a member mounted. on said shank and. slidable longitudinally thereof, said member having a recess,'a tapered locking key within said recess and cooperating with said tapered shank for holding the slidable member in adjusted position, means for operating said locking key, and a head connected to said slidable member.

In witness whereof, I hereunto aflix my signature.

FRANK C. HACHENEY. Witnesses:

GEORGE W. WrLsoN, AGNES V. WILSON. 

